Spraying apparatus for tractors



June 24,1941. R. 'r. STRIBLING ETAL SPRAYING APPARATUS FOR TRAOTORS 2 Sheets-Sheet 1 Filed Aug. 12, 1938 .LEil- 9 w H .mww m umm m 5. rm f w RA Patented June 24, 1941' SPRAYING APPARATUS FOR TRACTORS 'Reed T. Stribling, Imperial, and Alton E. Simmons, Fort Stockton, Tex.

Application August 12, 1938, Serial No. 224,476

2 Claims.

This invention relates to spraying devices and has particular reference to an attachment for tractors and [the like, and its primary object resides in the provision of an arrangement of elements whereby crops may be efiiciently sprayed with liquid poison.

Another object of the invention is in the provision of a liquid spraying device that is capable of uniformly poisoning insects and plant disease.

A further object of the invention is in the provision of a device of this character in which pressure within the supply tank is eliminated.

Another object of the invention is to provide an agitator within the supply tank .to prevent the settlement of precipitates commonly found. in poisons used for this purpose by by-passing and returning a portion of the poison solution to the tank.

Broadly, the invention seeks to provide a spraying device for attachment with tractors and the like which is capable of spraying crops with liquid poison and in providing a liquid operated agitator.

In conventional type sprayers the poisons used are adapted to crops having considerable moisture thereon as found in low areas. The present invention is particularly adapted to the spraying of crops in arid and high altitudes where atmospheric moisture is lacking. As will be seen in the detailed description, the device creates a spray which similates a liquid fog as the vehicle progresses in its operation.

With the foregoing objects as paramount, other and lesser objects will become manifest as the description proceeds taken in connection. with the appended drawings wherein:

Figure l is a plan view of a tractor having the device attached thereto.

Figure 2 is an elevational view of the device illustrating the platform supporting the rtank as well as showing the extensions of the nozzle pipes elevated in dotted lines.

Figure 3 is a cross-sectional view of the tank and an elevational view of the pump and the communications between the parts, and

Figure 4 is a vertical sectional view of a relief valve employed in the invention.

Accordingly, the invention is comprised of a tractor I which has at its forward end a relatively large angle iron 2 laterally attached with brackets 3. Some makes of tractors are provided with apertures to receive'bolts at the forcases, be attached directly thereto. Within the angle a of the angle iron 2 there is positioned a ward ends, and'the angle iron 2 may, in such street-Us 8, which in turn secure adjustable spray nozzles 9. By this arrangement it can'be seen that the nozzles can be adjusted vertically by positioning the street-.Ls 8 at different angles in the Ts 1.

At the outer ends of the pipe 4. and within the 7 ends b of the angle iron 2, street-L's I threadedly connect elbows H which in turn receive extended portions of pipe I2, and by means of elbows l3 at the outer ends other Ts I4 likewise receive street-Ls 8 and adjustable nozzles 9. The arrangement of the street-Ls l0 and the elbows I I provides pivots 0 whereby the extended pipe I2 and its accompanying partsmay be elevated for decreasingthe width-of the apparatus when passing through gates or other narrow closures without the necessity of dismantling the device.

At the rear of the tractor I a platform I is secured to the draw bars 16 in the manner illustrated in Figure 1. In different; makes of tractors the means of securing the platform may vary according to the provision made for rear attachments by various manufacturers. Upon the platform there is mounted. an oval tank H which is held in place by cradles l8, as illustrated in Figure 2.

To the power take off IQ of the tractor I, there is attached a pump 20; a universal joint. 2| is positioned therebetween for the purpose of accommodating vibration and distortion which may be present in the operation of the machine.

The bottom 22 of the tank H is provided with an outlet 23 which is connected to the pump 20 by means of a communication 24. Within the communication 24 there is positioned a valve 25 and a T 26, the valve being closer to the opening 23 than the T 26. Connected to the T 26 there is another valve 21, the purpose of which will become manifest as the description proceeds.

Above the tank I! another communication 28 extends from the pump 20 to a T 29 positioned directly above the said tank, thence a pipe 30 extends downwardly into the tank I! and has at its lower end another T 3l which has laterally extending tubular members 32, the ends at of which are closed. The tubular members 32 have angulan'ly disposed orifices 33, the operation of which will presently be described.

Within the T 29 above the tank I! there is positioned an adjustable relief valve 3 4 of the the pipe ill and, at the sametima creating pres-[- sure withinlthecomn iunieation-flr Within the co necting pipe 36. The latter extends to and joins unication a, between the What is claimed is:

1; In a spraying attachment for tractors including a tank and a pump and having an agitator for the contents of the said tank, a spray bar assembly comprising a discharge pipe extending I g i U v I I from the said tank, a rigid spray pipe connected tank "and the pumplla 135 receives a con- Y the nozzle supporting pipe 4, and is provided with a regulating valve .3!

operation. I

In operation, the poison is placed in the tank positioned for convenient l1 through the tank opening 38'. v The valve 25 is then closed and the valve 21, whichhas-a flexible hose 39 connected thereto, is'opened- The pump 20 isthen set in operation and, through the medium of the hose 39 andthe communication II, the tank I! is filled with the desired amount 1 of water. Thevalve 21, is then closed and the valve 25 opened. In spraying, the valve 31 of the connection I! is adjusted to allow'the desired amountof liquid to pass to the nozzles 9, the excess liquid passing through the communication 28 past the relief valve 34 and into the tank l1 and through the angular orifices 83 where. it causes agitation of the poison solution within thetank U I The relief valve 34, previously referred to, causes the liquid to be transmitted through the connection 36 to the nozzles Swhere it is sprayed.

In order that the operator may determine the pressure at the nozzles 9, a pressure gage 40 is threaded into'the communication 36 at a position where it may easily be read.

Manifestly, the structure shown is capable of considerable changes and modifications from to the said discharge pipe andhaving spray nozzles arranged therealong, an angle bar horizontally arranged on the'said tractor adapted to support the said spray pipe and extending beyond the ends thereof, extension pipes pivotally con- .nected to the ends of the said spray pipe at such points removed from the ends of the said angle bar thateach of the said extension pipes is horizontally supported thereby in both their extended and folded positions and spray nozzles connected 'to the said discharge pipe, an angle-iron contime to time by those skilled in the-art and such nected transversely to the said tractor providing a support for the said spray pipe and extending beyond the ends thereof on each side of the said tractor, extension pipes pivotally connected to the ends of the said spray pipe, the pivotal connections being of such kind and being so located on the angle-iron support that each of the extensions is horizontally supported by the said angle-iron at a point'removed from the pivotal connections in both their extended and folded positions and spray nozzles arranged along the said spray pipe and at the outer ends of the said extension pipes.

REED T. STRIBLING. ALTON E. SIMMONS. 

